package day20;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String str = in.nextLine();
            StringBuffer str2 = new StringBuffer();
            for(int i = str.length()-1; i >= 0; i--) {
                str2.append(str.charAt(i));
            }
            System.out.println(str2.toString());
        }
    }
}